Oil-stove.



J. D. ROBERTSON.

OIL STOVE.

APPLICATION FILED IuIY 7. I9I4.

Patented July 20, 1915.

3 SHEETS-SHEET 1.

J. D. ROBERTSON.

OIL STOVE.

APPLICTION FILED HJLY 7, 1914. 1,146,817. Patemed July 20, 1915.

3 SHEETS-SHEET 2.

- K JJQUEIZLSWU @mi/mamas f4' v COLUMBIA FLANDURAPH co., WASHINGTON. D. c.

J. D. ROBERTSON.

0IL STOVE.

APPLICATION FIL D Y 7, 1,146,817. E JUL im Patentedluly 20,1915.

3 SHEETSWSHEET 3. Z7MT z y z3 f "z/ I z2 1 Z9 I i *l* l I Zg 1y f I f7 4Z- 35 i y 33? jz 5'/ II I Il COLUMBIA PLANoGR/un Co., WASHINGTON. D. s:y

JOI-IN '1). ROBERTSON, OF RIDDER, 'LGUISIA-NA.

l(HL-STOVE.

Specification of aetterslratent.

Patented Julyld, i915.

kApplication filed ytruly f7, 1314. Serial No. 849,510.

To all wltomz't may concern:

Be it known that I, JOHN fl). ROBERTSON, a citizen of kthe United States, residing at De Ridder, in the parishof Beauregard and State or" Louisiana, have invented `new and useful Improvements in`Oil-Stoves,of which the lol-lowing is a specification.

This invention relates to improvements in oil ,stoves and burners therefor and consists in the construction, combination and arrangement of devices hereinafter described 1and claimed.

One :object ofthe invention is to improve the construction kof an oil stove 'whereby the oil supply tank for the burners is arranged below the bottom shelf in the bottom of :the stove and out of the way.` Y

Another object is fto provide improved means for supporting theburners and bracing the same and or also supporting the globes or chimneys used on the burners.

ln the accompanying drawings, Figure 1 is .an elevation of an oil stove constructed in accordance with my invention and lprovided with my improved burners. Fig. 2 is a vertical central sectional view ot the main burner and also a detail sectional View of the bottom shelf' `and oil supply tank. -Figz 3 is a vertical sectional viewl of the main burner on a plane at ri ht angles to that of Fig. 2. Fig. i is a 'etail vertical central sectional view of `one of the subsidiary burners. 5 is a view of a ragmentary ypart of the burner.

The stove lis 'here shown as provided with ,a portable oven 2, with a top 3,- a bottoni shelf 4f, and with supporting 'legs by means of which the bottom shel:l is spaced above the floor.

In accordance with my invention "l pro-- vide an oil supply tank 16 for the burners. rlhis ,tank is of oblong rectangular form, is `horizontally a ranged, and is arranged under the bottom shelf a, with one end projecting beyond one end offthestove, and the said oil. supply tank is secured in uplace under the shelf by means `of strap hangers .7. At the outer end of the `tank 6 is a gage 8 to indicate the quantityof oil in the tank under allconditions. An oil supply pipe 9 is also provided, .which has a funnel l() at its upper' end and is also provided at its upper end with a screw cap lll. A pump for supplying compressed lair to the tank, above the body of oil' therein, is indicated at ,12. Thisair-compressing and supply pump is vertically arranged, the lower endk of its .cylinder is connected as at 13 to the tank and the upper end of the cylinder is held by abrace 114. A piston or Aplunger rod of the pump is indicated at 15 provided at its upper end with .a cross handle 16. This Ipump may be of any suitable construction and isenrployed for compressing air in the .tank to bear :on vthe body of oil and sub 4ject the latter to such pressure as to cause the oil tobe readily fed through the oil suppjly pipe to the burners. The stove is here shown vas provided with a main centrally located burner 17 and with a pair of subsidiary burners 1S which are on opposite sides of and are suitably spaced .from the main burner.

`Each 'burner comprises a base 19 and a hollow 'head 20 which has a vertical central induction and mixing `tube 2l, an inner'wall 22 and anouter wall 9,3. 'The base is circular and has an annular wall 24 at its outer edge, on its upperside. At the center of the base is Va circular opening around which is a depending wall 25. rlhe outer wall 28 of thehead may be formed with the base. Said wall 23 is spaced from and arranged concentric with the wall 2li, and has a cenytra'l opening around which is a tubular portion 26 which isbetween the depending wall 25 of the base and the lower end of the mixing 'tube 2l. A web2? connects the upper end of kthe mixing tube with the upper side of the inner wall 22 of the head. A cap 28 is screwed on 'the upper side of the outer y wall 23 of the head and spaced above the rweb 27. Thereby a chamber is formed between the members of the head, which cham- '.ber extendsxaround the head and `also betweenthe web and cap, the upper end of the mixing tube discharging into the center of `said chamber. The outer wall Q3 of each head is oraminous, being provided with ',perforat'ions as .at 29.

Aband 30 extends around and is secured y tothe base of each burner at a point a suitable distance below the upper side of its wall 24. Eachband is secured to `the upper ends of the' braces 3l, the' lower endsof which are secured on the 'bottomshelf i of the stove. 'These braces 'are suitably spaced apart. kTwo or them .are used for supporting the secured between the oil supply pipes 33 of v the main burner.

The main burner is here shown as provided with a pair of oil supply pipes, the lower ends of which extend down into and nearly to the bottom of the tank 6 and are lprovided with gauze or other suitable strainers 34. Each oilsupply pipe is also provided with a suitable regulating valve 35 plied to the coils through the pipes 33 is vaporized in the coils when the main burner is in operation andthe vapor escapes from the coils through the downturned ends 38 of said oil pipes 33, said downturned ends converging downwardly and being connected to a vapor supply pipe 39 which leads to the subsidiary burners and has each end upturned as at 40 and provided with a minute jet opening 4l which is arranged below and which discharges upwardly through the center ofthe mixing tube of each subsidiary burner. Said vapor supply pipe is also provided, on its upper side, at its intersection with the vapor discharge ends 38 of the pipes 33 with a jet opening 42 which is arranged below and discharges up through the mixing tube 2l of the main burner. The vapor supply pipe is provided with regulating valves 43 for the subsidiary burners. A suitable air presssure gage 44 is provided preferably for the compressed air space of the oil supply tank 6.

A cylindrical chimney 45 is provided for each burner and is open at its upper end as at 46 and provided with an annular base 47 providing a central opening 48 corresponding in diameter with the exterior diameter of the burner base,'so that the wall 24 of the burner base is adapted to extend up through said opening andthe said annular bottom 47 of the chimney is adapted to bear on and be supported by the band 30. I-Ience the chimneys are firmly supported by and centered on the burners and are prevented from casually toppling or becoming deranged and yet are adapted to be readily removed from the burners when this is desired. The base 47 of each chimney is provided with air intake openings 49. Each chimney is provided in its front side with an opening 50 to afford access to the burner and with a hinged door 5l to close said opening.

The operation of my invention is as follows z-To start the stove a small quantity of alcohol is placed in the generating cup 32 and ignited, thus heating the generating coils. 'Ilietank 6 having been supplied with oil and also supplied with compressed air, oil passes up through the pipes 33 and through the generating coils and is converted in the coils into vapor and passes from the coils through the pipe 39 to the subsidiary burners. The vapor is discharged into the mixing tube of each burner,

through the openings 42 and 4l and in each burner the mixture passes out through the hollow head into the space between the walls 23-24 and there burns so that an annular flame is maintained around each burner and in the base of its chimney. If it is not desired to use the subsidiary burners the valves 43 may be closed. Or one subsidiary burner only may be used in addition to the main burner, if desired but where only one burner is to be used this must be the main burner as will be understood as the main burner is provided with the generating coils which supply not only itself but also the subsidiary burners.

Having thus described my invention, I claim l. In an oil stove a shelf, standard braces having their lower ends secured on the shelf, a band connecting the upper ends of the standard braces, a burner arranged in said band and having a wall extending upwardly therefrom, and a chimney having a base bearing on said band and provided with an opening through which the said wall extends so that the chimney is detachably secured and is also centered on the burner.

2. In an oil stove a shelf, standard braces extending upwardly therefrom, oil supply pipes also extending up from the shelf, a generating cup arranged between and secured to said oil supply pipes and standard braces, and a burner secured on the upper ends of the standard braces.

3. In an oil stove a shelf, standard braces extending upwardly therefrom, oil supply pipes also extending up from the shelf, a generating cup arranged between and secured to said oil supply pipes and standard braces, and a burner secured on the upper ends of the standard braces, the said oil supply pipes having generating coils arranged in the said burner.

In testimony whereof I afiix my signature in presence of two witnesses.

JNO. D. ROBERTSON.

Witnesses:

PED C. KAY, J. H. JACKSON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

